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Crystal Structure Studies of the System NaF-UF4, NaF-ThF4 and NaF-LaF3
Abstract: In the NaF-UF4 system the following intermediate phases have been found: NaUF5, -Na2UF6, -Na2UF6 and NacUF7. NaLaF4 is the only intermediate phase observed in the system NaF-LaF3. In the course of an incomplete study of the system NaF-ThF4 the phases NaTh2F9, -Na2ThF6, -Na2ThF6 and Na4ThF8 have been observed. Crystal structure data are given for all the phases.
Date:
August 1946
Creator:
Zachariasen, William H. (William Houlder), 1906-1979
System:
The UNT Digital Library
Mass Spectrometric Observation of C14
This report describes observations of a sample of Carbon-14, or radiocarbon, made using the method of mass spectrometry.
Date:
August 14, 1946
Creator:
Ingrham, Mark G.
System:
The UNT Digital Library
Identification and Crystal Structure of Barium Hydrogen Phosphate
From abstract: "The report describes the complete structure of barium hydrogen phosphate, Ba HPO4, as determined by means of x-ray diffraction. The crystal is orthorhombic, with cell dimensions given by a=5.71 A b=7.05 A c=4.61 A. The calculated density is 4.15gm/cm[^]3 for two molecules in the unit cell. The space group is C[subscript]2v[superscript]7-pmn. The barium, phosphorus, and two sets of oxygen lie in the plane of symmetry. The third set of oxygens are in general positions. Parameters for these atoms have been found, and interatomic distances calculated. The positions of the hydrogens are indicated by the characteristics O-H-O distance (2.58A) between two oxygens."
Date:
August 8, 1944
Creator:
Mooney, Rose C. L.; Compton, A. H.; Allison, Samuel King, 1900-1965; Stearns, J. C. & Zachariasen, William H. (William Houlder), 1906-1979
System:
The UNT Digital Library
Report on Determination of Densities of Several Uranium Compounds
This technical report details a process in order to determine the densities of several uranium compounds.
Date:
August 10, 1942
Creator:
Priest, Homer F. & Priest, G. L.
System:
The UNT Digital Library
The Metabolism of Thorium, Protoactinium, and Neptunium in the Rat
From abstract: "The distribution of carrier-free thorium, protoactinium and neptunium in the rat following intramuscular and oral administration has been studied. Oral adsorption for all three is negligible. Following parenteral administration, the skeleton is the organ showing the highest degree of prolonged and selective localization."
Date:
August 23, 1946
Creator:
Lans, H.; Scott, E. G.; Crowley, J. & Hamilton, J. G.
System:
The UNT Digital Library
The Effects of Fast Neutrons on the Ability of Mice to Take Forced Exercise
From abstract: "In an attempt to gain some insight into the physiological condition of mice surviving massive doses of radiation, a study of their vitality was undertaken. It was assured that the ability of these animals to do forced work would be a measure of their vitality, Stimulating exposed animals to run in exercise wheels to their fullest capacity, has resulted in a demonstration of a striking vitality less during a post-irradiative period, when no other effects are demonstrable by gross examination. Mice subjected to a medium-lethal dose of fast neutrons show a continuous vitality loss over a 300 day period following exposure. Control animals show no appreciable loss of vitality up to about 8 months of age, after which a gradual loss can be noted, probably due to a normal gereologic process."
Date:
August 22, 1946
Creator:
Stapleton, G. K. & Curtis, H. J.
System:
The UNT Digital Library
Slowing Down of Neutrons
From introduction: "The Boltzmann equation expressing conversation of particles in phase space is set up."
Date:
August 18, 1941
Creator:
Breit, G.
System:
The UNT Digital Library
Process Monitor, Mark 10, Model 20
This report describes a specific apparatus used to monitor the intensity of gamma radiation. The report includes a diagram of the apparatus.
Date:
August 17, 1946
Creator:
Jesse, William P.
System:
The UNT Digital Library
Inorganic Separations Using Ion Exchange
From summary: "In previous project work, dilute mixtures of inorganic cations in aqueous solution have been concentrated by adsorption of the cations on a synthetic resin and they have been fractionated by selective desorption of the cations from the resin. In this report..the general procedure used in chemical separation, the equipment used, and the theory of the exchange equilibria and of the reaction rates are presented."
Date:
August 29, 1946
Creator:
Peterson, H. D.
System:
The UNT Digital Library